Time switch



May 26, 1925. 1,539,204

. 'J. 5. PROWENSE TIME SWITCH Filed Jan. 2'7. 1923 Patented May 26,1925.

UNITED STATES JOSEPH SALVADOR JPMWENSE, OF KANSAS CITY, MISSOURI.

g TIME SWITCH.

Application filed fanuary 27, 1923. Serial No. 615,888.

To all whom it may concern:

Be it known that I, JOSEPH SALVADOR PRoWnNsn, a citizen of the UnitedStates, residing at Kansas City, in the county of Jackson and State ofMissouri, have invented new and useful Improvements in Time Switches, ofwhich the following is a specification.

The object of my present invention is the provision of a peculiar andadvantageous time switch.

To the attainment of the foregoing, the invention consists in'theimprovement as hereinafter described and definitely claimed.

In the accompanying drawings, forming part of this specification Figure1 is a top plan View illustrating the preferred embodiment of myinvention which includes a casing and a switch properlyarranged-relative to the casing.

Figure 2is a side elevation showing the said casing and the partscarried thereby.

Figure 3 is an enlarged detail vertical section taken on the line 5-5 ofFigure 1, but with the watch omitted.

Figure 4 is a diagrammatic view illustrative of a specific use of thetime switch which is of general application.

Similar numerals of reference designate corresponding parts in all ofthe views of the drawings.

In the embodiment I have elected to. illustrate, the casing alluded tocomprises a body 1 and a cover 2, hinged at 3 to the body 1. In thecasingbody 1 are located a transformer 4 and an electric bell mechanism5, the hammer 6 of the said mechanism 5 being properly arranged relativeto a gong 7 dis posed exteriorly of the cover 2 and being adapted towork through a slotin the cover, Figure 3. Also arranged on and carriedby the cover 2 is an incandescent electric lamp 9 exteriorly of thecover, and in about the relation illustrated to the said lamp 9 thecover 2 is equipped at its outer side with a conductive plate 10 onwhich an ordinary watch 11 is adapted to be superimposed after themanner shown in Figure 1, the crystal of the said watch being removed orbeing swung upwardly from over the dial and the minute and hour hands 12and 13 of the watch so as to enable the hour hand 13 to cooperate in themanner hereinafter described with the adjustable terminal 14 shown inFigures 1, 2 and 3.

The said adjustable terminal 14 is pivotally mounted to swinghorizontally on a post 15 carried by the cover 2, the said post 15 beingthreaded for the engagement of a nut 16 and being equipped with a coilspring 17 between which and the nut 16 the terminal 14 is interposed asillustrated. In virtue of this construction it will be apparent that theterminal 14 can be positioned at various distances from the conductiveplate 10 to accommodate watches of various thicknesses. In the use ofthis portion of my improvement, the watch 11 is superimposed on theplate 10, the crystal of the watch being removed or being swung atrightangles to the major portion of the watch, and the terminal 14 isturned about its axis so as to position its end 18 at the hour orfraction of hour at which it is desired to actuate the alarm. The minutehand of the watch is adapted to travel above and clear of the terminal14 but the hour hand of the watch is adapted to bring up against thesaid terminal and thereby close the electric circuit hereinafterdescribed at the predetermined time. Manifestly because of theadjustable capacity of the terminal 14 the terminal can be readilylocated in proper position to the watch to assure free movement of theminute hand 12 clear of the terminal 14 while assuring the hour hand 13bringing up against the terminal 14 so as to close the electric circuit.It will also be readily appreciated that the watch can be readilypositioned in various positions on the plate 10 and relative to theterminal 14 to bring about actuation of the alarm at the predeterminedtime.

By reference to Figure 4 it Will be noted that the electric bellmechanism 5 and the lamp 9 are arranged in parallel and that the primarycircuit which maybe a house circuit is designated by 20 while asecondary circuit is designated by 21. Manifestly when at thepredetermined time the secondary circuit is closed through the terminal14, the hour hand of the watch, the watch and the plate 10 in the mannerbefore indicated the electric bell mechanism,5 will be actuated to soundan alarm and at the same time the filament of the lamp 9 will be causedto glow. When the party for whom the alarm is actuated is awakened it ishis province to remove the watch from the plate 10 and thereby break thesecondary circuit.

My novel time switch is of general application and therefore it isadapted to be used for the sounding of an alarm in the event that a dooror a window is opened by a burgiar. For this purpose I employ one ormore circuit closers such as shown in Figure at. The said circuit closercomprises an electric body 23, a terminal 24 and a terminal 25. Thelatter terminal includes a pivoted lever and subject to the action or" aspring stripQT relatively arranged as shown in Figure at. The lever ofthe said terminal is arranged at the inner side or" the door 28 as shownin Figure 4t, and hence when the door is opened the lever will be swungand the spring strip QT tensioned so that when the lever has been movedbeyond a certain point, the spring strip will operate to snap and holdthe lever in engagement with the terminal 2%, and in consequence thecircuit in which the circuit closer is arranged will be completedthrough the lever and the spring strip and the terminal 24L as will bereadily understood. By reference to Figure a, it will be noted that thewiring in connection with the terminals of the circuit closer designatedgenerally by 30 is designated by 31 and that other wires 32 may bereadily connected to the terminals of another circuit closer similar tothecircuit closer 30. It will also be noted from Figure at that theelectric wiring is of such character that in the event of the circuitclose-r 30 being actuated as described the electric bell mechanism 5will be actuated to sound an alarm and the filament of the lamp will becaused to glow notwithstanding the hour hand 13 of the watch may be outof contact with the terminal 14. It will be apparent from the foregoingthat I have provided a simple and eiticient alarm mechanism, and onethat is reliable in operation, is susceptible of being expeditiously andeasily set, and is free of delicate parts such as are likely to get outof order after a short period of use.

I have entered into a detailed description of the construction andrelative arrangement of the parts embraced in the present and preferredembodiment of my invention in order to impart a full, clear and exactunderstanding of the said embodiment. I do not desire, however, to beunderstood as confining myself tothe specific construction and relativearrangement of parts inasmuch as in the future practice of the inventionvarious changes and modifications may be made such as fall within thescope of my invention as defined in my appended claims.

Having described my invention, what I claim and desire to secure byLetters Patcut, is

l. The combination of a conductive plate adapted for the removablearrangement in superposed position thereon of a watch, a terminalmounted in spaced relation above the conductive plate and adapted tocoope ate with a watch hand for the closing of a circuit at apredetermined time; the said terminal being mounted to swing about anaxis. and being adjustable toward and from the conductive plate.

2. The combination of a conductive plate adapted for the arrangementthereon of a watch, and a terminal mounted in spaced relation to theconductive plate and adapted to cooperate with a watch hand for theclosing of a circuit at a predetermined time; the mounting of theterminal including a threaded post about which terminal is adaptedtoturn, a spring about said post and interposed between the terminal andan abutment, and a nut mounted on the post and arranged at the oppositeside of the terminal with reference-to the spring.

In testimony whereof I affix my signa ture.

JOSEPH SALVADOR PROWENSE.

